diff --git a/Makefile b/Makefile
index 35652bb6b7dde29a3526478240c52aaef7819dce..61e1dcdd41ffcd9458bef9c010aa33b2e72c6eef 100644
--- a/Makefile
+++ b/Makefile
@@ -63,27 +63,27 @@ $(TARGET_DIR)/%: $(BUILD_DIR)/%.o
 
 TASK1_EXE = $(TARGET_DIR)/task_1
 test_task1: init_test $(TASK1_EXE)
-	$(TASK1_EXE) < $(INP_DIR)/task_1_sample.in > $(TMP_DIR)/task_1_sample.out
+	timeout 10 $(TASK1_EXE) < $(INP_DIR)/task_1_sample.in > $(TMP_DIR)/task_1_sample.out
 	diff -us $(TMP_DIR)/task_1_sample.out $(OUT_DIR)/task_1_sample.out
 
 TASK2_EXE = $(TARGET_DIR)/task_2
 test_task2: init_test $(TASK2_EXE)
-	$(TASK2_EXE) < $(INP_DIR)/task_2_sample.in > $(TMP_DIR)/task_2_sample.out
+	timeout 10 $(TASK2_EXE) < $(INP_DIR)/task_2_sample.in > $(TMP_DIR)/task_2_sample.out
 	diff -us $(TMP_DIR)/task_2_sample.out $(OUT_DIR)/task_2_sample.out
 
 TASK3_EXE = $(TARGET_DIR)/task_3
 test_task3: init_test $(TASK3_EXE)
-	$(TASK3_EXE) < $(INP_DIR)/task_3_sample.in > $(TMP_DIR)/task_3_sample.out
+	timeout 10 $(TASK3_EXE) < $(INP_DIR)/task_3_sample.in > $(TMP_DIR)/task_3_sample.out
 	diff -us $(TMP_DIR)/task_3_sample.out $(OUT_DIR)/task_3_sample.out
 
 TASK4_EXE = $(TARGET_DIR)/task_4
 test_task4: init_test $(TASK4_EXE)
-	$(TASK4_EXE) < $(INP_DIR)/task_4_sample.in > $(TMP_DIR)/task_4_sample.out
+	timeout 10 $(TASK4_EXE) < $(INP_DIR)/task_4_sample.in > $(TMP_DIR)/task_4_sample.out
 	diff -us $(TMP_DIR)/task_4_sample.out $(OUT_DIR)/task_4_sample.out
 
 TASK5_EXE = $(TARGET_DIR)/task_5
 test_task5: init_test $(TASK5_EXE)
-	$(TASK5_EXE) < $(INP_DIR)/task_5_sample.in > $(TMP_DIR)/task_5_sample.out
+	timeout 10 $(TASK5_EXE) < $(INP_DIR)/task_5_sample.in > $(TMP_DIR)/task_5_sample.out
 	diff -us $(TMP_DIR)/task_5_sample.out $(OUT_DIR)/task_5_sample.out
 
 .DEFAULT_GOAL:= all